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  • posted bytessomc on 01/16/2014

    The "One Channel 5V Relay Module" in a good package, i opened, fired up arduino, put in a protoboard, tested, works OK. Then i moved to my gardening project to replace another one, its been there for a month, and its working great! There is no con HOW TO USE IT: Plug VCC on arduino 5v (or external 5v) Plug GND to GND Plug S to an Digital port,... Read more

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  • posted bydiypwn on 05/27/2013

    Works out of the box with 5V microcontroller boards like the Arduino Uno. Just hook it up to Ground, 5V and a pin of your choice. Use writeDigital(HIGH) or LOW to switch the relay on or off (or rather close the circuit Common - Normally Open). The screw terminals (NO, NC, C) are not properly labeled so you will have to figure out which one is which ... Read more

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